    html,
    body {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
        background: #333;
        overflow: hidden;
    }
    
    * {
        box-sizing: border-box;
        -moz-box-sizing: border-box;
        -webkit-box-sizing: border-box;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    #image {
        opacity: 0;
    }
    
    .container {
        position: absolute;
        top: 0;
        bottom: 0px;
        width: 100%;
        overflow: hidden;
    }
    
    footer {
        position: absolute;
        bottom: 0;
        height: 80px;
        z-index: 1;
        width: 100%;
    }
    
    .sr-only {
        border: 0 none;
        clip: rect(0px, 0px, 0px, 0px);
        height: 1px;
        margin: -1px;
        overflow: hidden;
        padding: 0;
        position: absolute;
        width: 1px;
    }
    
    .btn-upload {
        background: url('http://www.weitoo.com/upload.svg');
        background-repeat: no-repeat;
        background-position: center center;
        background-size: 100px;
        display: block;
        width: 150px;
        padding-top: 140px;
        text-align: center;
        color: #666;
        font-size: 18px;
        position: absolute;
        top: 50%;
        margin-top: -115px;
        left: 50%;
        margin-left: -75px;
    }
    
    .cropit-preview {
        background-size: cover;
        background-position: center center;
        border: 1px solid #ccc;
        width: 280px;
        height: 280px;
        top: 50%;
        left: 50%;
        margin: -180px 0 0 -140px;
        display: none;
    }
    
    .cropit-preview-image-container {
        cursor: move;
    }
    
    .cropit-preview-background {
        opacity: .2;
        cursor: auto;
    }
    /* 加载效果 */
    
    .spinner {
        width: 50px;
        height: 50px;
        position: absolute;
        top: 50%;
        left: 50%;
        margin-left: -25px;
        margin-top: -55px;
        -webkit-animation: change 1.5s linear infinite;
        animation: change 1.5s linear infinite;
        -moz-animation: change 1.5s linear infinite;
        display: none;
        z-index: 999;
    }
    
    @keyframes change {
        0% {
            -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
            -moz-transform: rotate(0deg);
        }
        50% {
            -webkit-transform: rotate(180deg);
            transform: rotate(180deg);
            -moz-transform: rotate(180deg);
        }
        100% {
            -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
            -moz-transform: rotate(360deg);
        }
    }
    
    .operating,
    .upload {
        width: 100%;
        padding: 0;
        margin: 0;
        display: none;
    }
    
    .operating > li,
    .upload > li {
        list-style: none;
        width: 20%;
        text-align: center;
        display: inline-block;
        float: left;
        color: #559B09;
    }
    
    .operating > li > img,
    .upload > li >img {
        width: 30px;
        border: 0;
    }
    
    .upload > li {
        width: 33.3333%;
    }
    
    #tips {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        z-index: 999;
        background: rgba(0, 0, 0, .4);
        display: none;
    }
    
    #tips .window {
        width: 84%;
        margin: 45% 8% 0;
        background: #fff;
        min-height: 180px;
        border-radius: 12px;
        position: relative;
    }
    
    #tips .window .tipbody {
        padding: 30px 50px;
        text-align: center;
    }
    
    #tips .window .tipfooter {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        text-align: center;
        cursor: pointer;
        font-weight: bold;
        color: #00b7ee;
        line-height: 48px;
        border-top: 1px solid #e5e5e5;
    }
    
    #tips .window .tipfooter:hover,
    #tips .window .tipfooter:focus {
        background: #eaeaea;
        border-radius: 0 0 12px 12px;
    }